diff options
Diffstat (limited to 'c/src/lib/libbsp/m68k/gen68360/timer')
| -rw-r--r-- | c/src/lib/libbsp/m68k/gen68360/timer/Makefile.in | 53 | ||||
| -rw-r--r-- | c/src/lib/libbsp/m68k/gen68360/timer/timer.c | 95 |
2 files changed, 148 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/m68k/gen68360/timer/Makefile.in b/c/src/lib/libbsp/m68k/gen68360/timer/Makefile.in new file mode 100644 index 0000000000..79c8438431 --- /dev/null +++ b/c/src/lib/libbsp/m68k/gen68360/timer/Makefile.in @@ -0,0 +1,53 @@ +# +# $Id$ +# + +@SET_MAKE@ +srcdir = @srcdir@ +top_srcdir = @top_srcdir@ +VPATH=@srcdir@ + +PGM=${ARCH}/timer.rel + +# C source names, if any, go here -- minus the .c +C_PIECES=timer +C_FILES=$(C_PIECES:%=%.c) +C_O_FILES=$(C_PIECES:%=${ARCH}/%.o) + +H_FILES= + +SRCS=$(C_FILES) $(H_FILES) +OBJS=$(C_O_FILES) + +include $(RTEMS_CUSTOM) +include $(PROJECT_ROOT)/make/leaf.cfg + +# +# (OPTIONAL) Add local stuff here using += +# + +DEFINES += +CPPFLAGS += +CFLAGS += + +LD_PATHS += +LD_LIBS += +LDFLAGS += + +# +# Add your list of files to delete here. The config files +# already know how to delete some stuff, so you may want +# to just run 'make clean' first to see what gets missed. +# 'make clobber' already includes 'make clean' +# + +CLEAN_ADDITIONS += +CLOBBER_ADDITIONS += + +${PGM}: ${SRCS} ${OBJS} + $(make-rel) + +all: ${ARCH} $(SRCS) $(PGM) + +# the .rel file built here will be put into libbsp.a by ../wrapup/Makefile +install: all diff --git a/c/src/lib/libbsp/m68k/gen68360/timer/timer.c b/c/src/lib/libbsp/m68k/gen68360/timer/timer.c new file mode 100644 index 0000000000..7d87c1397a --- /dev/null +++ b/c/src/lib/libbsp/m68k/gen68360/timer/timer.c @@ -0,0 +1,95 @@ +/* + * Timer_init() + * + * Use TIMER 1 and TIMER 2 for Timing Test Suite + * + * The hardware on the MC68360 makes these routines very simple. + * + * Based on the `gen68302' board support package, and covered by the + * original distribution terms. + * + * W. Eric Norum + * Saskatchewan Accelerator Laboratory + * University of Saskatchewan + * Saskatoon, Saskatchewan, CANADA + * eric@skatter.usask.ca + * + * $Id$ + */ + +/* + * + * Input parameters: NONE + * + * Output parameters: NONE + * + * NOTE: It is important that the timer start/stop overhead be + * determined when porting or modifying this code. + * + * COPYRIGHT (c) 1989-1997. + * On-Line Applications Research Corporation (OAR). + * Copyright assigned to U.S. Government, 1994. + * + * The license and distribution terms for this file may in + * the file LICENSE in this distribution or at + * http://www.OARcorp.com/rtems/license.html. + */ + +#include <rtems.h> +#include <bsp.h> +#include "m68360.h" + +void +Timer_initialize (void) +{ + /* + * Reset timers 1 and 2 + */ + m360.tgcr &= ~0x00FF; + m360.tcn1 = 0; + m360.tcn2 = 0; + m360.ter1 = 0xFFFF; + m360.ter2 = 0xFFFF; + + /* + * Cascade timers 1 and 2 + */ + m360.tgcr |= 0x0080; + + /* + * Configure timers 1 and 2 to a single 32-bit, 1 MHz timer. + * HARDWARE: + * Change the `25' to match your processor clock + */ + m360.tmr2 = ((25-1) << 8) | 0x2; + m360.tmr1 = 0; + + /* + * Start the timers + */ + m360.tgcr |= 0x0011; +} + +/* + * Return timer value in microsecond units + */ +int +Read_timer (void) +{ + return *(rtems_unsigned32 *)&m360.tcn1; +} + +/* + * Empty function call used in loops to measure basic cost of looping + * in Timing Test Suite. + */ +rtems_status_code +Empty_function (void) +{ + return RTEMS_SUCCESSFUL; +} + +void +Set_find_average_overhead(rtems_boolean find_flag) +{ +} |